Lifting-jack.



S. C. 'APPLEWHITE.

L!FTING JACK." APPLICATION FRED JUNE 17, 1915 Patfinted Jan. 18,1916.

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soo'r'r o. APIBLEWHITE, or sAn ANTONIO, TEXAS.

LIFTING-JACK.

' I 8 Application filed June 17 To all whom it may] 0mm:

Be it known that I, SCOTT C. Arrnnwnrrn, a CItlZEIl of the UnitedStates, residing at San Antonio, in the county of Bexar and State ofTexas, have invented new and useful Improvements in Lifting-Jacks, ofwhich the following is a specification.

The present invention relates to lifting jacks and more particularly tothat typeof jack which is adapted to be operated for lifting the vehicleby the momentum or movement of the latter.

The present invention contemplates a jack of novel and simpleconstruction and which is void of any pawl and ratchet, or otherhand-operated mechanism, for manually lifting the vehicle With the abovein view, the invention consists in a. substantially quadrantal segmentbeing formed with an eccentric portion extending at a tangent to thesegment and forming the lifting portionof the jack, and a removable andadjustable bearing head for the segment adapted to engage with the aXleor suitable portions of the vehicle.

The invention further consists in the novel construction of theinvention and in the combination of parts hereinafter more fullydescribed and finally pointedout in the .appended claims. 7

In the drawings which \form' part of the specifi'cationzFigure, 1 isaside elevation of the invention illustrating the same placed inposition preparatory to the lifting of the vehicle; Fig. 2 .is a viewsimilar to Fig. 1 showing the invention in operative position, or havinglifted the vehicle and supporting the same in position; Fig. 3 is aperspective view of the invention showing the bearing head removedfrom-the segment; and Fig. l is a detail sectional view taken on line HofFig.2. Y

Like reference characters denote similar like parts'throughout thespecification and drawings.

Referring particularly to the drawings, the lifting jack A consists ofa. quadrantal segment 1 beingformed on one side of its enlarged end w1th.an eccentric projection 2. The outer peripheral edge of the eccentricportion 2 is formed to extend at a tangent upon their side edges withthe reinforcing Specification of Letters Patent.

PatentedJan. is, 1916. 1915. Serial no. 34,667

thepresent embodiment, the same is shown being formed integrallytherewith. The

upper ends of the reinforcing ribs 3 are integrally joined together toform, with the quadrant 1, "a solid shank or supporting head l; or, inother words, the ribs 3 diverge from the shank or solid supporting head-11: and form a continuation thereof to act as reinforcing ribs for thequadrantal segment land the eccentric portion 2, which latter arepreferably of light metal. The peripheral edge of the eccentric portion2 and the quadrant 1 unite to form the bottom bearing surface of thejack. An angular .foot piece 5, adapted to conform to the contour of theperipheral edge of the portions 1 and 2, provides an enlarged tread orhearing face for the baseof the jack, which is adapted to be rockedtherefrom when oper atively placed for lifting. The foot or treadportion 5 may be suitably secured to the quadrant 1 and eccentricportion 2, however, as here shown, the same is formed-integrallytherewith and is rigidly connected to the reinforcing ribs 3. Thebearing head 6 having one end bifurcated or formed with theright-angular recess, as shown at 7, is adapted to be r'emovably andadjustably supported upon the supporting head i of the lifting jack. Toinore specifically describe the bearing headt, it may be said that thesame comprises a substantially rectangular body portion 6 having abifurcated flared end, the walls 7 of the bifurcation being at rightangles to each other and adapted to accommodate the hub or axle B of thevehi- As will be seen from the drawings, each of the lugs 10 are,respectively, received in one of the o aenings 8 in the bearing head 6and adjustalily engage with the notches 9 to admit of said head 6 to bevertically adjusted upon the lifting jack A. By pro- 'viding twojsets ofnotches 9 and their cor responding supporting lugs 10, it willbe vent hebearing head 6 from moving lon -10" seen that greater strength isproducedand the peculiarly constnlcted bearing head 6 is prevented'fromrotating uponthefjack A.- The lugs 10 are further provided with theenlarged heads 11- which are ofsufficient sizeto,engage with the notches9 and pre-' gitudinally with respect to the pins 10, con- Y .seg uently,holding the head Gin a substantr Y ly fixed andbrigid position.

wi thus. e seen that the lifting jack (imposed-of wo parts, namely;vthead-v j ustable bearing head 6 and. the quadrantal. segment supportingportions -1, and-this particular construction admits of a readyadjustment and easy manipulation of the bear- .ing head' 6 upon thelifting jack A, it being apparent that no other manual adjustment .1' oroperation of the jack is necessary than to adjust the head 6 uponthe'supporting head 4 the. desired distance to which the axle .or other.portion of the vehicle is to-be elevated. H y When *the j'ack A isplaced under 'an axle K of a veh-icle or other suitable portion thereof;so that the axle is fitted in the bifurcatedend of the bearing head 6,.and so shown -in Fig. 1.

that" the tread or base portion 5 of the jack rests on the ground ,;orflooring, the.

vehicle can, of its own 'forward or back:

'Ward.motion,'lift that portion of its structure that is above the jack;in other words, the'vehicle jacks up itself after the jack has beensuitably placed" in a; position as To jack up" the front,

wheels, 'of' the vehicle, it is preferable to place-the jack forward ofthefront axle and then, in the'casesof auto-mobiles, the .power may beused for forwardly-moving the vehicle which will instantly rock the jackupon its tread 5 and-elevate the front portion of the vehicle. To ack upthev rear wheels, the jackis placed ina similar manner behindthe rearaxle and then by a slight backward movement of the vehicle, the

jacks will be rocked upon their treads 5.

and the rear'wlieels-of the vehicle Willfbe elevated. .Dismounti'ng ofthe vehicle from the jacks may be accomplished 'by the mere pushing ofthe vehicle or by turning on the power of the latter reversely to thatby which the vehicle was raised.

Y Having thus described the invention, is believed: that 'theforegoin'gis a .clear and accurate description of the same andthat a fullunderstanding thereof may be had. However, it is to be understood thatcert'ain'changes asto the precise construction and combination" of partsmay heresorted to that fall within the legitimate scope of the appended.claims. I What is claimed-is:

LA device of the character described comprising a quadrantalsupportingmember being formed with an eccentric rocking A portion adapted toengage with the ground,

a bearing head formed with a bifurcatedv end adapted to engage withportions of a vehicle, said head being formed with a plurality of slotstherein, a. series of notches formed in each' slot, and a plurality oflugs projecting from said supporting member-and adapted to, be,adjustably received for supporting said bearing head in position, saidjack being adapted to raise the vehicle when the latter is rocked uponits eccentric rocking portion.

2. A jack for vehicles'comprising a sheet metal supporting "member beingformed, with an eccentric rocking portion adapted to engage the ground,a solid shank formed on said supporting member opposite said rockingportion, lugs projecting from one side of said shank andja bearing headformed with-means for adjustable and r'emovable engagement with saidlugs and for supporting said head upon said shank.

3. In a device ofthe character described,

comprising, a quadrantal' supporting meme her-formed with an eccentricrocking porin the recesses 'formed' between said notches tion adapted toengagerwith' the. ground, a Y

earing head formed witha slottherein, a series of notches formed'in saidslot, and lugs projecting from said supporting memher and adapted to beadjustably received in the recesses formed between said notchesfor'supporting the bearing member inposi- In testimony whereof I havehereunto set mv hand in presence oftwo subscribing

